Switch structures for use on printed circuit boards
US8111522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2008 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Dec 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/10053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical contact area on a printed circuit board (“PCB”), that would otherwise be subject to abrasion and possibly also corrosion, can be protected by covering it with another, more durable contact structure that is bonded to the first-mentioned contact area using an anistropic conductive adhesive (“ACA”). The more durable contact structure may include a member of PCB material or the like with electrically connected electrical contacts on its upper and lower surfaces. At least the upper one of these contacts (which is exposed for the service that involves possible abrasion and/or corrosion) may be given high durability by plating it with hard gold. The lower of these contacts is adhered to the main PCB via the above-mentioned ACA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.